The following table summarizes some endocrine glands,their hormones,and their functions in the human body. Identify the correct options for the three blanks $A, B$,and $C$.

Endocrine Gland	Hormone	Function
$A$	Estrogen	Maintenance of secondary sexual characters
Alpha cells of Islets of Langerhans	$B$	Increases blood glucose level
Anterior Pituitary	$C$	Hypersecretion causes gigantism

• A
  $A$: Ovary,$B$: Glucagon,$C$: Growth Hormone
• B
  $A$: Placenta,$B$: Insulin,$C$: Vasopressin
• C
  $A$: Ovary,$B$: Insulin,$C$: Calcitonin
• D
  $A$: Placenta,$B$: Glucagon,$C$: Calcitonin